Manufacture of waterproof textile materials



Aug. 20, 1935. i s. COGNO 2,012,240

MANUFACTURE OF WATERPROOF TEXTILE MATERIALS Filed May 3, 1934 WM'U GIUSEPPE COGNO' Patented Aug. 20, 1935 MANUFACTURE OF WATERPROOF l'lK'l'lI-I MATERIALS Giuseppe Oogno. 'torino, Italy Application May I, I'll. Serial No. 723,183 In Italy May 28, 1 98! ficlaima.

Rubber proofed fabrics intended to be used in ufacture of impermeable clothing have beenmadeinthepasteitherby arubber proofing composition on one side of the cloth,

8 or by sticking together two separate fabrics of expensive to manufacture. Materials of the first larprocmsothatthefinishedclothhaiafacingononesideandisproofedonthereverseside. Watcrproofed fabrics have been faced or cally or otherwise onto an adhesive layer during the Scattering the particles on to tbewaterprooflaverevenlypresentsadifiicult problem and one of the objects of the present invention is to provide a method whereby the cloth is iaced'wlth a thin layer of fibrous material which is evenly and smoothly appliedand which appears in its finished form similar to a piece of woven fabric. This thin layer of textile zaterial is thick enough to obviate the unpleast feel of a rubber waterproof coating, but is sufficiently light and thin not to give the resulting material an undesirable heaviness. If desired, the main fabric may be treated similarly on the other side so that the resulting product consists of a very thin layer of textile material, a layer of rubber waterproofing composition, the

main textile layer. another layer of rubber wa-,.

terproofing composition and finally, another very thin textile layer.

object of the present invention is to provide a simple means whereby a waterproof material may be produced having a different pattern on the two'sldes, together with the advantages enumerated above.

According to the present invention I provide a method of proofing textile material consisting I in appLving a layer of waterproofing material to one face of the textile material applying a secondpieceoffabrictotheexposedfaceofthe ofbeinglreavyinuseandoi'beilie layer, and subsequently removing substantially the whole of the second fabric so astolcavea portionofthenapfrom the whole of the contacting surface of the said fabric, adhering to the waterproofing layer.

In order to illustrate more closelv how the invention may be carried out in practice, the following details are given by way of example, though it is obvious that considerable variations maybemadeinthedetailshereshown.

In the drawing filed herewith:

Figs. 1 to4 showperspective viewsof thecloth in various stages of its manufacture.

l 'igJisaperspectiveviewofapieceofcloth consmicted according to a modified method.

Referring to the drawing:

l 'ig.ishowsapieceofproofedfabrlcmwhich arepresentsanysuitabletextilefabricwhichhas beenspreadovercnoneofitsfaceswithalayer ofunvulcaniredrubber bbymeansofauy ordinaryspreading m Fig.2showsapieceof fabricusedasthesticking-on layer to be peeled off subsequently, the pattern on the face of the stichng-on fabric being represented by the lines (I. The fabric shown inl 'ig.2musthaveafacecovcredwitha nap of'suitable length, its texture and colouring being of secondary importance,as also is the nature of the material of which it is made, which may be woolen, silk, cotton or other material. Any ordinary End of camel hair fabric, for instanoe,willdoforthepurpose,aswillalsoany fabrics of any colouring and of any manufacture. even those with a comparatively short nap, or felt fabrics of any colouring and manufacture.

Apieceofthe fabric showninl'ig} isthen .takenofthesamesiseasthepieceofproofed fabric shown in Fig. 1 and superimposed on it with the nap face downward, the resultant assemblage being shown in Fig. 8, in which a and b represent the fabric and the proofinir layer as in Pig. 1; and c represents the back of the stickingon layer as in Fig. 2. The assemblage is then passed through a calender and may subsequently be vulcanized. Thereupon the sticking-on fabric is peeled on from the fabric a so that on the proofed layer 1) of fabric a there remains adhering a portion, even if ever so slight, of the nappy surface of the sticking-on fabric sufiicient to give to the fabric a when seen from the proofed side b the appearance of the sticking-on fabric in regard to pattern (1 and colouring, this being new reproduced "(as d) over the proofed side of fabrlcaasshowninl lg. 4. Inotherwords.thereis reproduced on top of the proofed surface b of fabric a a true transfer by counter-draw of part of the face of the sticking-on fabric. This sticking-on fabric, having in the transfer process lost but a very small part of its superficial nappy layer may, after the transfer process, be turned again to its normal use. or else may serve for the transfer process several times repeated before becoming If the sticking-on fabric has been stripped of! before vulcanization, the material is vulcanized subsequently. In either case there is produced a perfectly impermeable cloth presenting a surface having the same appearance as that of the nap of the sticking-on fabric which has served for the transfer process.

In accordance with the present invention, the same proofing and-transfer p may be repeated (either simultaneously or otherwise) also on the reverse side of fabric a, thereby obtaining a finished cloth (see Fig. 5), whereof both the facing and the reverse have been rubber-proofed to the same extent and presenting on either side the same aspect of proofing, although the patternsthereofmaybemadetolookdifl'erent (asin d and e) if sticking-on fabrics of different patterns have been used.

Asavariant,there mayalsobetakenanoriginalfabricmbearingalreadyonone ofitssidesa pattern of its own, whether printed or woven, in order to apply on the other side the proofing to be submitted to the transfer process by means of the sticking-onfabric,andinthiscasealsotherewill be produced a single-ply impermeable cloth with facing and reverse but proofed only on one side. Such a cloth proofed only on one side may, of course, be used as such, or alternatively it may beprintedonthereversesldebyanyoftheusual means of printing. either before or after the preparation of the proofed fabric.

The single-ply impermeable cloth with facing and reverse produced through the process contained in the-present invention will with a great saving of expense and weight replace with facing and reverse made up of two distinct galleries stuck together which have been used up now.

It is of course understood that the word rubher is used throughout this specification to denotethe usualtypeofrubbermlxturecontaining sulphur, fillers, accelerators, anti-oxidants and the like, as is usual in the art.

whatlclaimanddesiretosecurebyletters Patent is:-

1. Method of proofing textile material consistinginappiyingalayerofwaterproofingmaterial toonefaceofthetextilematerial,applyinga secondpieceoffabrictotheexposedfaceofthe waterproofing layer, and subsequently removing substantially the whole of the second fabric so as to leave a portion of the nap from the whole of the contactingsurface of the said fabric, ad-

hm'ingtothewaterproofinglaver.

2.Methodofproofingtextilemateriaiconsisting in applying a layer of waterproofing material to one face of the textile material. ap y n a second piece of'fabrlc to the exposed face of the waterproofing layer, vulcanizing the assembled materials. and subsequently removing substantially the whole of the second fabric so as to leave a portion of the nap from the whole of the contacting surface of the said fabric, adhering to the waterproofing layer.

3. Method of proofing textile material consisting in applying a layer of waterproofing material to one face of the textile material, applying a second piece of fabric to the exposed face of the waterproofing layer, passing the assembled materials through a calender, vulcanising the assembled materials, and subsequently removing substantially the whole of the second fabric so to leave a portion of the nap from the whole 0 the contacting surface of the said fabric, adhe to the waterproofing layer.

4. Method of proofing textile material consistinginapplylnga layerofrubbertoonefaceof the textile material, applying a second piece of fabric to the exposed face of the rubber layer, vulcanizing the assembled material's, and subuquentlyremcving substantially the whole of the second fabric so as to leave a portion of the nap from the whole of the contacting surface of the said fabric. adhering to the rubber layer.

5. Method of proofing textile material consisting in applying a layer of waterproofing material to one face of the textile material, applying a second piece of fabric of any desired colour or pattern to the exposed face of a waterproofing layer, vulcanizlng the assembled materials and subsequently removing the whole of the second fabric so as to leave a; portion of the nap from the whole of the contacting surfm of the second piece of fabric adhering to the waterproof layer.

6. Method of proofing textile material consisting in applying a layer of waterproofing material to both faces of the textile material, applying a second piece of fabric of any desired colour or patterntotheexposedfaceoi'eachwaterproof layer, vulcanizing the assembled materials, and subsequently removing substantially the whole of thesecondpiecesoffabricsoastoleaveaportion 1ofmtli isenspthereonadheringtothewaterproof 7. Aproofed textiiemateriaicomprisingapiece of textile materiahawalayeronons face thereof,andalayeroffibrousmaterialon theexposed faceofthewaterproofinglayensaid fibrous layer composed of the nap ofanother piece of textile material.

8. Aproofedtextilematerialcomprisingapiece oftextiiemateriaLalayeronboth faces thereomandalayeroffibrous materiahin theexposedfaceofeachwaterproofinglayenthe said fibrous layer composed ofthenapofanother Piece of textile material. 

